Upgrade your scooter’s engine performance with this high-performance RedCap Cylinder Head, specifically designed for 100cc engines equipped with 69mm valves and a big bore kit setup. Built to deliver superior airflow and combustion efficiency, the enlarged valve design and precision-machined combustion chamber work together to significantly boost horsepower and torque. Whether you're cruising through city streets or demanding more from your ride on open roads, this cylinder head provides the power you need for a thrilling and responsive riding experience.

Crafted from durable, high-quality materials and engineered for long-lasting reliability, this cylinder head offers enhanced cooling efficiency with specially designed heat-dissipating passages, keeping engine temperatures in check during extended rides. With exact bolt spacing for intake and exhaust ports (44.75mm and 49.75 mm, respectively), this component ensures a seamless fit with existing parts, making installation simple for both professional mechanics and DIY enthusiasts. Perfect for upgrading GY6-style scooters, this cylinder head is your go-to solution for unlocking the full potential of your 100cc engine.
  • Perfect Fit: Machined to exact tolerances, this head is the ideal upgrade for 100cc big-bore kits using the 139QMB engine platform. With intake and exhaust bolt spacing of 44.75mm and 49.75mm, respectively, it installs seamlessly into compatible scooters and mopeds, ensuring leak-free operation and OEM-level alignment every time.
  • Enhanced Power: Designed with a high-flow combustion chamber and 69mm valves, this 100cc cylinder head significantly boosts your engine’s ability to intake and exhaust air efficiently. The result is noticeable gains in horsepower, torque, and throttle response across the entire RPM range—perfect for riders craving stronger acceleration and speed.
  • Superior Design: Engineered with enhanced cooling passage architecture, this cylinder head provides improved thermal regulation to prevent overheating. Whether cruising at top speed or climbing steep grades, your engine maintains consistent performance and efficiency, even under sustained high-load conditions.
  • Durable Construction: Crafted from high-quality, heat-resistant alloy, this cylinder head is built to endure the stresses of performance riding. It resists warping and cracking under extreme temperatures and engine loads, making it the perfect choice for long-distance riders, racers, or anyone upgrading for power and longevity.
  • Easy Installation: Engineered for plug-and-play compatibility, this 100cc cylinder head with 69mm valves can be easily installed using standard tools and basic mechanical skills. No complicated modifications required, just bolt it in and experience a dramatic performance upgrade with minimal downtime or shop costs.
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